EP 3616813 A4 20210120 - ROTARY TOOL AND METHOD FOR MANUFACTURING CUT WORKPIECE
Title (en)
ROTARY TOOL AND METHOD FOR MANUFACTURING CUT WORKPIECE
Title (de)
ROTIERENDES WERKZEUG UND VERFAHREN ZUR HERSTELLUNG EINES GESCHNITTENEN WERKSTÜCKS
Title (fr)
OUTIL ROTATIF ET PROCÉDÉ DE FABRICATION D'UNE PIÈCE À TRAVAILLER COUPÉE
Publication
Application
Priority
- JP 2017088144 A 20170427
- JP 2018016139 W 20180419
Abstract (en)
[origin: EP3616813A1] A rotary tool in one of embodiments includes a main body having a circular columnar body, including a rotation axis and extending from a first end to a second end. The main body includes first flutes and a first cutting edge. The first flutes go toward a rear side in a rotation direction of the rotation axis at a helix angle θ1 as going toward the second end. The first cutting edge is located on a ridge line where the outer periphery of the main body intersects with the first flutes. The main body also includes second flutes and a second cutting edge. The second flutes go toward a front side in the rotation direction of the rotation axis at a reverse helix angle θ2 as going toward the second end. The second cutting edge is located on a ridge line where the outer periphery of the main body intersects with the second flutes. The θ2 is larger than the θ1, m≥5, m-n≥3, and m and n are coprime numbers where m is the number of the first flutes and n is the number of the second flutes.
IPC 8 full level
B23C 5/10 (2006.01)
CPC (source: EP US)
B23C 5/10 (2013.01 - EP US); B23C 2210/0492 (2013.01 - EP); B23C 2210/208 (2013.01 - EP); B23C 2210/209 (2013.01 - EP); B23C 2226/27 (2013.01 - EP)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 2018198930A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3616813 A1 20200304; EP 3616813 A4 20210120; CN 110573283 A 20191213; CN 110573283 B 20210525; JP 6860657 B2 20210421; JP WO2018198930 A1 20200227; US 11642729 B2 20230509; US 2020290134 A1 20200917; WO 2018198930 A1 20181101
DOCDB simple family (application)
EP 18792142 A 20180419; CN 201880027597 A 20180419; JP 2018016139 W 20180419; JP 2019514441 A 20180419; US 201816608231 A 20180419